William c



(No Model.) 2 Sheets-Sheet 1. W. G. MAGKINNEY. FRICTION CLUTCH.

Patented Ja11.5,1892.

CD7/gw@ (No Model.) 2 Sheets-Sheet 2.' W. C. MAGKINNEY. y

FRIGTION CLUTCH.' 110.466,611. Patented Jan. 5, 1892.

FIG/,3.

UNITED STATES PATENT OFFICE.

VILLIAM C. MAOKINNEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGN'OR TO THEII. IV. BUTTERVVORTII d: SONS COMPANY, OF SAME PLACE..

FRlcTloN-CLUTCH.

SPECIFICATION forming part of Letters Patent N o. 466,61 1, datedJanuary 5, 1892-. Application filed May 14, 1891. Serial No. 392.668.(No model.)

To all whom, it may concern.-

Be it known that I, VILLIAM O. MACKIN- NEY, a citizen of the UnitedStates, and a resident of Philadelphia, Pennsylvania, have in- 5 ventedcertain Improvements in Friction- Clutches, of which the :following is aspecification.

The object of my invention is to construct an improved friction-clutchwhich can be readio ily attached to or detached from a pulley or hub onthe shaft and which can be readily operated as fully describedhereinafter, reference being had to the accompanying drawings, in which-15 Figure 1 is a face view of my improved clutch, the shaft being insection. Fig. 2 is a transverse sectional view through the hub and partof the clutch. Fig. 3 is a sectional view showing a modified form ofclutch; and

zo Figs. 4, 5, and 6 are views of modifications of the bearing for theclutching-ring. Referring to the drawings, A is the shaft, loose onwhich is a hub B, in the present instance forming part of a pulley B,although z 5 in some instances where two shafts are to be coupledtogether the hub may be fast on one shaft and form merely a bearing forthe clutchruw.

On the spokes b is a series of lugs b', to

3o which is secured a clutch-ring C by screwbolts c. This clutch-ring isshown plain in Fig. 2, but may have in some instances friction-faces csecured thereto, as shownin Fig. 3.

D is a sleeve fast to the shaft attached there- 3 5 to by means of aset-screw a or key, or both. This sleeve has a flange d, between whichand a ring E is situated the clutch-ring C. This ring E, as shown inFig. 2, slides on a projecting flange d on the sleeve D, the ring E 4obeing the clutching-ring, which is moved by mechanism which I will nowproceed to describe.

Screwed into the ring E at a number of points-four in the presentinstance-are 45 headed bolts F, having at their outer ends nuts f andjam-nuts f, and adapted to the bolt between the nut f and the flange clare levers G, having their fulcrums at g, the point being a projectionon the flange d.

5o Each lever G is connected to a sliding collar H by links h, saidcollar being moved toward and from the sleeve D on the shaft by a yokeengaging with the pins fi, mounted on the strap I of the collar or byany other means common to clutches of this class.

In some instances I form on each lever G a lug g', which bears againstthe bolt or one of its nuts and acts to force the clutchingring awayfrom the ring C when it is desired to release the hub from the controlof the 6o shaft, and in some instances, instead of the lever G restingagainst the edge of the projection on the flange d, it may be pivotedthereto, as shown by dotted lines in Fig. 2.

In Fig. 3 I have shown the ringE as adapt- 65 ed to slide on aprojecting ilange c 0f the ring C, and in Fig. 4t I have shown vthe ringE guided bythe lugs b. In Fig. 5 I have shown the ring E adapted toslide on the hub B, and in Fig. 6 I have shown the ring E 7o guided bythe bolts F, which slide in bearings in the flange d of the sleeve. Anyof these modifications may be used without departing from my invention.

In Fig. 3 I have shown the levers G pivoted 75 to ears on the flange dof the sleeve D and adapted to collared nuts F on the bolt F. These nutshave collars f2 projecting on each side of the short arm of the lever.

The hub B in the present instance has a 8o grease-reservoir J, and isprovided with screwplugs j, and between the shaft A and the hub is inthe present instance a bushing K, which is perforated to allow thegrease to gain access to the shaft. Thus it will be seen that 8; aquantity of grease can be carried by the i hub and be automatically fedto the bearing, as in most instances clutches of this character are ininaccessible places and during the greater portion of the time areturning with 9o the shaft, so that it 'is impossible to oil the bearingwithout either first throwing the belt olf or stopping the driving orcounter shaft.

I claim as my invention- 1. The combination of the friction-ring se- 95cured to one part of the clutch, a sleeve D, having a flange adapted toone side of the friction-ring, a clutching-ring adapted to the oppositeside of said ring, headed bolts having screw-threads at their headsadapted to screwthreads in the clutchingring and screwthreads at theiropposite ends, nuts on the IOC said screw-threaded portion of the bolts,with levers situated between the nuts and the flange, and mechanism foroperating said levers, substantially as and for the purpose described.

2. The combination of the friction-clutch, the shaft, the pulley looseon the shaft, projections on said pulley, a iiat friction-ring securedto said projections by means of screws, a dished sleeve secured to theshaft and overlapping the hub, a flange on said sleeve adapted to oneside of the friction-ring, a clutchingring adapted to guides, so as tomove parallel with the line of the shaft, bolts secured to and passingthrough the rin g and through the flange, and levers acting on saidbolts, with mechanism for operating said levers, substantially asdescribed.

3. The combination, in a friction-clutch, of the hub, friction-ringthereon, a sleeve adapted to oneside of the friction-ring, aclutching-ring adapted to the opposite side of said friction -ring,boltspassing through the clutching ring and sleeve, a nut on each bolt havingflanges, with the leversadapted to the space between the flanges of thenuts, and mechanism for operating said levers, so that thevclutching-ring will be under the control of the levers, substantiallyas described.

ln testimony whereof I have signed my 3o name to this specification inthe presence of two subscribing witnesses.

W'ILLIAM C. MACKINNEY. Witnesses:

JAMES F. HAGEN, EUGENE ELTERICH.

